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NEET2026BiologyChapterActual

Read the following statements. (a) Adult echinoderms are radially symmetrical but larvae are bilaterally symmetrical. (b) Sponges possess a water vascular system which helps in food gathering and respiratory exchange. (c) An excretory system is absent in the members of Phylum Echinodermata. (d) Radula is a file-like rasping organ present in the mouth of Arthropods. (e) In Echinoderms, fertilization is usually externa

Options

  1. A(b), (d) and (e) are correct
  2. B(a), (b) and (c) are correct
  3. C(a), (c) and (e) are correct
  4. D(c), (d) and (e) are correct

Correct answer

C. (a), (c) and (e) are correct

Step-by-step solution

Statement (a) is correct. Adult echinoderms are radially symmetrical but their larvae are bilaterally symmetrical. Statement (b) is incorrect. Sponges possess a water canal system, not a water vascular system. The water vascular system is a characteristic feature of echinoderms. Statement (c) is correct. An excretory system is absent in the members of Phylum Echinodermata. Statement (d) is incorrect. Radula is a file-like rasping organ present in the mouth of molluscs, not arthropods. Statement (e) is correct. In e

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